WO1999052214A3 - Communications device - Google Patents
Communications device Download PDFInfo
- Publication number
- WO1999052214A3 WO1999052214A3 PCT/IB1999/000514 IB9900514W WO9952214A3 WO 1999052214 A3 WO1999052214 A3 WO 1999052214A3 IB 9900514 W IB9900514 W IB 9900514W WO 9952214 A3 WO9952214 A3 WO 9952214A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oscillator
- frequency
- voltage
- transitor
- communications device
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
- H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/30—Circuits for homodyne or synchrodyne receivers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Transmitters (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55020999A JP2002500857A (en) | 1998-04-02 | 1999-03-25 | Communication device |
EP99907802A EP0986856A1 (en) | 1998-04-02 | 1999-03-25 | Communications device |
KR19997011170A KR20010013185A (en) | 1998-04-02 | 1999-03-25 | Communications device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9807052.7 | 1998-04-02 | ||
GBGB9807052.7A GB9807052D0 (en) | 1998-04-02 | 1998-04-02 | Communications device |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999052214A2 WO1999052214A2 (en) | 1999-10-14 |
WO1999052214A3 true WO1999052214A3 (en) | 2000-02-24 |
Family
ID=10829718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1999/000514 WO1999052214A2 (en) | 1998-04-02 | 1999-03-25 | Communications device |
Country Status (8)
Country | Link |
---|---|
US (1) | US6271737B1 (en) |
EP (1) | EP0986856A1 (en) |
JP (1) | JP2002500857A (en) |
KR (1) | KR20010013185A (en) |
CN (1) | CN1266554A (en) |
GB (1) | GB9807052D0 (en) |
TW (1) | TW437153B (en) |
WO (1) | WO1999052214A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4110668B2 (en) * | 1999-05-13 | 2008-07-02 | 松下電器産業株式会社 | Signal generator |
US7519333B2 (en) * | 2000-07-03 | 2009-04-14 | Texas Instruments Incorporated | Radio architecture for use with frequency division duplexed systems |
KR100617139B1 (en) | 2004-12-07 | 2006-08-31 | 엘지전자 주식회사 | A frequency direct conversion receiver for a mobile telecommunication device and a direct conversion method using the device |
US8981862B2 (en) | 2012-09-13 | 2015-03-17 | Qualcomm Incorporated | Cancelling supply noise in a voltage controlled oscillator circuit |
CN105429598A (en) * | 2015-11-18 | 2016-03-23 | 中国电子科技集团公司第三十八研究所 | Low cross-modulation microwave down frequency conversion module |
US10873486B1 (en) * | 2020-01-23 | 2020-12-22 | Goodix Technology Inc. | Receiver circuits with blocker attenuating RF filter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5101178A (en) * | 1990-03-27 | 1992-03-31 | Nec Corporation | Crystal oscillator having frequency adjustment responsive to power supply voltage |
EP0601515A1 (en) * | 1992-12-07 | 1994-06-15 | Nec Corporation | Oscillation circuit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4074209A (en) * | 1976-12-13 | 1978-02-14 | Rca Corporation | Wide range frequency modulation of narrow loop bandwidth phase-locked oscillators |
JPS622813Y2 (en) * | 1979-07-20 | 1987-01-22 |
-
1998
- 1998-04-02 GB GBGB9807052.7A patent/GB9807052D0/en not_active Ceased
-
1999
- 1999-03-25 EP EP99907802A patent/EP0986856A1/en not_active Withdrawn
- 1999-03-25 CN CN99800468A patent/CN1266554A/en active Pending
- 1999-03-25 KR KR19997011170A patent/KR20010013185A/en not_active Application Discontinuation
- 1999-03-25 JP JP55020999A patent/JP2002500857A/en active Pending
- 1999-03-25 WO PCT/IB1999/000514 patent/WO1999052214A2/en not_active Application Discontinuation
- 1999-03-31 TW TW088105126A patent/TW437153B/en active
- 1999-03-31 US US09/282,326 patent/US6271737B1/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5101178A (en) * | 1990-03-27 | 1992-03-31 | Nec Corporation | Crystal oscillator having frequency adjustment responsive to power supply voltage |
EP0601515A1 (en) * | 1992-12-07 | 1994-06-15 | Nec Corporation | Oscillation circuit |
Also Published As
Publication number | Publication date |
---|---|
TW437153B (en) | 2001-05-28 |
CN1266554A (en) | 2000-09-13 |
GB9807052D0 (en) | 1998-06-03 |
WO1999052214A2 (en) | 1999-10-14 |
KR20010013185A (en) | 2001-02-26 |
JP2002500857A (en) | 2002-01-08 |
EP0986856A1 (en) | 2000-03-22 |
US6271737B1 (en) | 2001-08-07 |
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